Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Data [Abstract]

Quarterly Financial Data (Unaudited)

Quarterly Financial Data (Unaudited)

Quarterly financial information for the years ended December 31, 2019 and 2018 are summarized as follows:

(Millions)	2019								2018
Quarters ended	12/31		9/30		6/30		3/31		12/31		9/30		6/30		3/31
Revenues	$	377	$	388	$	418	$	432	$	406	$	386	$	351	$	318
Pretax income	132		131		130		119		108		107		93		108
Net income	$	93	$	110	$	112	$	103	$	61	$	109	$	88	$	129